private void TChart_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (MouseButtons != MouseButtons.Left)
{
return;
}
var test = this.HitTest(e.X, e.Y);
if (test.Object is AxisScrollBar)
{
return;
}
AxisScaleView view1 = this.ChartAreas[0].AxisX.ScaleView;
int interval = start - e.X;
double value = interval * (view1.ViewMaximum - view1.ViewMinimum) * 1 / this.Width / 0.7;
value = Math.Round(value);
if (value == 0)
{
return;
}
if (view1.ViewMaximum + value <= this.ChartAreas[0].AxisX.Maximum && view1.ViewMinimum + value >= this.ChartAreas[0].AxisX.Minimum)
{
view1.Position += value;
start -= (this.Width * 0.7 * value / (view1.ViewMaximum - view1.ViewMinimum)).ToInt();
}
}
/// <summary>
/// 检查是否可以调整。确保可以调整。
/// </summary>
/// <param name="ScaleView"></param>
private static void CheckZoomable(AxisScaleView ScaleView)
{
if (!ScaleView.IsZoomed)
{
ScaleView.Zoom(ScaleView.ViewMinimum, ScaleView.ViewMaximum * 0.999999999);
}
}
public static bool DrawWave(WaveFile wave, Chart chartcontrol)
{
bool isComplited = true;
if (wave != null)
{
// Установка меток оси
chartcontrol.ChartAreas[0].AxisX.Title = "t";
chartcontrol.ChartAreas[0].AxisY.Title = "A";
// Минимальное значение по оси Х, максимальное значение, установки интервала масштабирования
chartcontrol.ChartAreas[0].AxisX.Minimum = 0;
chartcontrol.ChartAreas[0].AxisX.Maximum = wave.RightData.Length;
chartcontrol.ChartAreas[0].AxisX.Interval = wave.SamplingRate;
// Минимальное значение Y-оси, максимальное значение
chartcontrol.ChartAreas[0].AxisY.Minimum = wave.RightData.Min();
chartcontrol.ChartAreas[0].AxisY.Maximum = wave.RightData.Max();
// Отображение полосы прокрутки
AxisScaleView sv = chartcontrol.ChartAreas[0].AxisX.ScaleView;
sv.SmallScrollSize = wave.SamplingRate;
sv.Position = 1;
sv.Size = wave.SamplingRate * 10;
chartcontrol.ChartAreas[0].AxisX.ScaleView = sv;
AxisScrollBar sb = chartcontrol.ChartAreas[0].AxisX.ScrollBar;
sb.ButtonStyle = ScrollBarButtonStyles.All;
sb.IsPositionedInside = true;
chartcontrol.ChartAreas[0].AxisX.ScrollBar = sb;
Series series = new Series();
series.ChartType = SeriesChartType.FastLine;
for (int i = 0; i < wave.LeftData.Length; i++)
{
series.Points.AddXY(i, wave.RightData[i]);
}
chartcontrol.Series.Add(series);
chartcontrol.Invalidate();
}
else
{
isComplited = false;
}
return(isComplited);
}
private void UpdateShow()
{
AxisScaleView view1 = this.ChartAreas[0].AxisX.ScaleView;
if (this.Series.Count == 0)
{
return;
}
if (this.Series[0].Points.Count * 1.0 * (view1.ViewMaximum - view1.ViewMinimum) / (this.ChartAreas[0].AxisX.Maximum - this.ChartAreas[0].AxisX.Minimum) / this.Width < 0.03)
{
this.Series[0].Label = "#VAL";
}
else
{
this.Series[0].Label = null;
}
}
private void MouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Right)
{
return;
}
if (!WrappedChart.ChartAreas[0].AxisX.ScaleView.IsZoomed)
{
return;
}
int delta = e.X - lastMousePosX;
lastMousePosX = e.X;
AxisScaleView view = WrappedChart.ChartAreas[0].AxisX.ScaleView;
double start = view.ViewMinimum - delta;
view.Scroll(start);
for (int i = 0; i < Series.Count; i++)
{
ZoomApproximation(Series[i]);
}
}
// Events which initiate approximation.
private void AxisViewChanged(object sender, ViewEventArgs e)
{
if (!e.Axis.Equals(WrappedChart.ChartAreas[0].AxisX))
{
return; // if we aren't dealing with X axis ignore that.
}
AxisScaleView view = WrappedChart.ChartAreas[0].AxisX.ScaleView;
if (view.IsZoomed)
{
for (int i = 0; i < Series.Count; i++)
{
ZoomApproximation(Series[i]);
}
}
else
{
for (int i = 0; i < Series.Count; i++)
{
ApproximateSeries(Series[i]);
}
}
}
private void TChart_MouseWheel(object sender, MouseEventArgs e)
{
if (this.Series.Count == 0 || this.Series[0].Points.Count < 3)
{
return;
}
AxisScaleView view1 = this.ChartAreas[0].AxisX.ScaleView;
double total = Math.Abs(e.Delta);
double interval = 1;
for (int i = 0; i < total; i += 120)
{
if (e.Delta > 0)
{
interval *= 0.8;
}
else
{
interval *= 1.2;
}
}
if (interval > 1 && (view1.ViewMaximum - view1.ViewMinimum) > (this.ChartAreas[0].AxisX.Maximum - this.ChartAreas[0].AxisX.Minimum) * 0.8)
{
view1.ZoomReset();
this.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
UpdateLine();
return;
}
this.ChartAreas[0].CursorX.IsUserSelectionEnabled = false;
if (this.ChartAreas[0].AxisX.CustomLabels.Count == 0)
{
return;
}
string v1 = this.ChartAreas[0].AxisX.CustomLabels[0].Text;
double value;
if (this.Series[0].XValueType == ChartValueType.Time)
{
var v2 = v1.Split(' ')[0].Split(':');
value = v2[0].ToInt() * 60 + v2[1].ToInt();
}
else
{
value = v1.ToDouble();
}
double min2 = value - (value - view1.ViewMinimum) * interval;
min2 = Math.Floor(min2);
double max2 = value + (view1.ViewMaximum - value) * interval;
max2 = Math.Ceiling(max2);
if (interval < 1 && max2 - min2 < minInterval * 3)
{
return;
}
view1.Zoom(min2, max2);
UpdateShow();
UpdateLine();
}
private void Zoom(AxisScaleView asv, double coeff)
{
double shift = coeff * (asv.ViewMaximum - asv.ViewMinimum);
asv.Zoom(asv.ViewMinimum + shift, asv.ViewMaximum - shift);
}
public AxisSize(AxisScaleView view)
{
Min = view.ViewMinimum;
Max = view.ViewMaximum;
}
